Steam-fire-engine pump



(No Model.) 2 Sheets-Sheet 1.

0. H. Fox; v STEAM FIRE ENGINE PUMP. No. 569,966, Patented 00a zo,1896'.

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,Z mumugm in Las@ e5 married [fjrox (No Model.) 2 Sheets-Sheet 2.

` V CLHi STEAM FIRE ENGINE PUMP.

N6, 669,966. Patented 066..'20, 1696.

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nati, in thecounty of Hamilton and State of 'pumps to be placed muchcloser f UNITED STATES, .PATENT Orricnl :CHARLES n. Fox, on 'cIN-oNNATI,onto, ASSIGNOR To 'run AMERICAN Finn ENGINE coMPANy, or SENECA FALLS,New' Yoan.

- *sTEAM-Fmia-ENGINE PUMP.

lSPEGIFIGATIIION forming part of Letters Patent'No. 569,966, datedOctober 2v0, 1896.

pplicationleddune 22,1894. BerialNm515A04. (Nomodel.)

barrels and are so adapted to prevent conflicting currents. Theair-cushion branch in connection withl the discharge-chamber is extralong, which materially aids in `the steadiness of the pumps action.

My invention will be first fully described with reference to the accompan vin g drawings, and afterward more particularly pointedout in thelannexed claim. l' Figure 1 is a sectional elevation of my 4improveddouble-acting lire-engine pump. Fio". l is a front elevation of thesaine, parts being broken `away and parts being shown in section. Fig. 3is a detail plan View of a guumetal casting embracing the common suctionchamber or reservoir, the pump-lmrrells, and the reciprocal suction andforce chambers, part being broken away and some oi .the valves beingremoved from their seats. Fig. 4 is an enlarged longitudinalseetional'view of the same. Fig. View oi' the same. Fig. 6 is anenlarged perspective viewot'thc detachable pump-barrel lining.

1 1 are ordinary steam-cylinders, in which operate pistons 2, mountedupon the pistonrods I3. l is the slide-Valve for controlling theadmission of steam to the cylinder, and 5 are reciprocating yohcsVconnecting the piston-rods 3 and 32, and spaced to provide thenecessary room foi-'the rotation of the iiy- \\'heelcrauks and boxedends of the connecting-rods 24, which latter extend on each side of thelower yoke-piece 5 and piston-rod 22, as shown in Fig. 2. G are theily-wheel cranks,

Bc itknown that l, CH-AltIQES H. FOX, a citizen of the'United. States,`residing at Cincin- Ohio, haveinvented certain new and usefulImprovements in Steam-Fire-Engine Pumps; and I do lhereby declare thatthe following specification, taken in connection with the accompanyingdrawings, is apfull, clear, and exact descriptionof my improvements,such as will enable Athose skilled in .the art to make and use the same.l My invention relates to improvements in fire-engine pumps of thedouble-acting type, the object aimed atbein g to combine both thepractical'and theoretical requirements essential to a simple; reliable,and efficient tire-engine pump, 'and particularly with regard tocombined eiciency and facility for examinationand repair. 1

The pumps-aren'nited in a gun-metal 'casting'which forms a single body,embracing the suction chamber or reservoir, thev suctionmouths, andreciprocal suction and i'oree chambers of both pumps, and permits the asto 'centers than could otherwise be done. Uniting the' two pumps inasingle structure also obviates the usual weakness in constructionattending a connectionr between separate pumps for the reason that thecombinedfforrn furnishes a rigid basis for the entire structure,sinipliii'es the driving mechanism, and enablesit to endureextraordinary strainsv without vibration. Removable caps and other partsare provided for rendering the working partsof the pumps interior'mechanism readily accessiblev for cleaning or'reliewing, and thepri|nc,im1. ortance oi' perfect Waterways has been provided l'or bygreatly increasing the valve area, dimin ishing the lift of the valve,and arranging the valves i'n clusters around the open ends oi' thepump-barrels. 'lhe suction may be connectedv tol eitheriendmf the pump,the cominon suction chamber or reservoir serving to uniformly distributethc water to the suctionvalves, which are preferably `of the conical\Vilcox type. "The discharge valves are placed in a separate chamberwhich communicates with thel reciprocal suction andiorce chambers ai theopposite ends of the pnmpl inIgs of the connecting-rods 2.1, 7 is thefly- 'heel. S are tite eccentric-valve movenmnts for actu ati n g thesteam-,valves 4. These pa ris are of ordinary constr ietion'.

10 is the gun-metal casting, resembling a box-girder forming a singlebody which embraces the connnon suction chamber orrcservoir li,extending from end to end and serving as a common reservoir to thedoubleacting pump, the open-ended pump-barrels 12 and 12, which arelocated cent-rally in th(` main suction chamber or reservoir adjacent tothe opposite ends, and the reciprocal suction and t'crce chambers 13,13, 115, and 13?, which extend ai right angles across the open 5 is atransverse sectionaljonrnaled in the engine-f rame and'to the boxcatedin the passages which communicate be-v scopes ends of the pump-barrel1;', while the chamis bers lli and i3C arrI in communication with theopposite ends ol' the pump-barrel li". l

ll and l5 are the suctionmouths at the opposite ends ofthe casting,communieating withthe main reservoir, and which are adaptcd to beconnected with an)Y suitable water suppl)v and, as the casting extendstransverschY across` the engine, al'l'ord convenient means ot'connecting the pump up to Ythe water supply from the nearest side.

yiti are the metal gratos or Valvc-scats, lo-

tween the reservoir l1 and the reciprocal suc-- tion and force chamberslil, 13, 13, and 13.

i7 are the conical rWilcox suction-valves provided with the spiralslp-ings 1S for holding` them to their seats.

l!) are the removable pump-barrel linings, which are formed with theperforated flanged heads 19, adapted to receive and be secured in placeby the screw-bolts 20.

llach of the pump-pistons "2l is constructed of an upper cup-shapedsection fitted to the piston-r n 22 and formed with a projecting boss,over which tits a packing-disk 23, consisting, preferably, of canvas,graphite,land oil pressed and cut into the form of a disk, and a lowercup-shaped `section fitted te the end of the piston-rod 22 and confiningthe packing'. The piston-rods 2; are attached to the loweryoke-scctions5 and to the cranks (i `through the connecting-rods 2st. Y

25 are racuuni-chambers communicating with the suction chamber orreservoir ll.

2o' is the discharge-chamber ha rfing the outlet-nozzle '.'T andcommunicating with the reciprocal suction and force chamber-S13, 13,lll", and lil" through the ralred passages 2S. 'lhe Valves il),controllingthe passages 38, are preferably ol' the form covered bypatent of Ahrens, dated .iannarur1 22, i854, No. 292,296;

:3U is the .air chamber, communicating through the pipe 3l with theforce-chamber 2o, said `elnnnber being made'cxtra long I or renderinglthe pu1np`s action more steady.

The passages :"8 are located adjacent to the upper walls of thelcciprocal suction and force chambers, and .-,l he outlebnozzle :27 isat a higher eleyation than said passages in order that the air-bubbleswill not be trapped, but will be allowed lo pass upward and onward tothenozzleand be discharged lromthe pump.

lfump-head'd and 3U, the casting embracing the discharge-ehamber 2H andair-vessel bran eh 3l, and the cap-plate 37 are rmnovably secured inplace for facilitating the exposure el' the pnmps interior mechanisml'or cleaning or repairing,

The operation will be clear from the drawings. I n the drawings theleft-hand piston is represented in the middle of its downward stroke,while the right-hand piston is reprcsented at the point ot' completingits upward stroke. r1`hc wat-er is taken into the suction chamber orreservoir 'll from any suitable supply and drawn through thesuetionwalves 't 17 into the independent reciprocal suction and forcechambers 13, 115", 123, and 13. 'lhc Valves 'l7 operate indepelnlentlyto allow the 'entry o1' or con [inc the water in the independentchambers 13, 13, 13b, and 'll". VIn thc p0- sition in which the pump isrepresented water is being drawn into the chambers 13 and 13" while thewater is being forced out of the` chambers 13"* and lil into the commondischarge-chamber 2G. From the chamber 2G the water is forced from theoutlet-nozzle 27 in the usual manner.

Having thus described myinvention, the following is what'I claim as newtherein and desire to secure bylettels Patent:

In a steam lire-engine, the combination `of a rectangularhorizoutally-arranged casting formed with an inner suction-chamber upperand lower horizontal partitions and two cha-m,- bers outside of saidpartitions each divided by a transverse wall into two compartments whichoperate reciprocally as suction and force chambers, two pump-barrelsmounted between the horizontal partitions, extending through but notcommunicating with the main suction-chamber and opening ea ch into twoopposite reciproeally-acting compartments, water-supply inletscommunicating with the re speetivc ends ot the main sucton-ehamber,valved openings arranged around the respec tive ends of thepump-barrclsand forming a communication between the lnain chamber andthe reciprocally-aeting compartments, upper and lower cap-plates closingsaid compartments, a suitable discharge-chamber, an independent `valvcdpassage leading from cach of the reciprocally-acting compartments to thedischarge-chamber, and an engine of substantially the` characterdescribed controlling pump-pistons working in .the respectire barrels,as explained.'

v CHARLES III. FOX. \\'itness z l p s A. e. vla'rnnn,

.1, O. Woomrann.

